bzhbБетон и железобетонConcrete and Reinforced Concrete0005-98893034-1302АО «НИЦ «Строительство»bzhb-41Research ArticleСтатьиВлияние эксплуатационных нагрузок на деградацию железобетона морских сооруженийInfluence of operational loads on the degradation of reinforced concrete of offshore structuresШалыйЕ. Е.ShalyiE. E.

инженер

e-mail: john_shamali@mail.ru 

Engineer

e-mail: john_shamali@mail.ru 

john_shamali@mail.ruЛеоновичС. Н.LeonovichS. N.

д-р техн. наук, иностранный академик РААСН

e-mail: sleonovich@mail.ru 

Doctor of Sciences (Engineering), Foreign Academic of RAACS

e-mail: sleonovich@mail.ru 

sleonovich@mail.ruБудревичН. А.BudrevichN. A.

инженер

Engineer

Дальневосточный федеральный университетРоссияFar Eastern Federal UniversityRussian FederationБелорусский национальный технический университет; Qingdao University of TechnologyБеларусьBelarusian National Technical University; Qingdao University of TechnologyBelarusБелорусский национальный технический университетБеларусьBelarusian National Technical UniversityBelarus2021140920236064813Copyright © Шалый Е.Е., Леонович С.Н., Будревич Н.А., 20232023Шалый Е.Е., Леонович С.Н., Будревич Н.А.Shalyi E.E., Leonovich S.N., Budrevich N.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.bzhb.ru/jour/article/view/41

Коррозия арматуры морских и прибрежных гидротехнических сооружений вследствие хлоридной агрессии и карбонизации бетона ведет к резкому снижению безопасности сооружения. Арматура подвергается процессу депассивации, как только содержание хлорида на ее поверхности превысит пороговую концентрацию либо значение рН в защитном слое бетона уменьшится до порогового значения в результате карбонизации. При проникновении кислорода до поверхности арматуры реализуются электрохимические реакции с образованием продуктов коррозии. Это приводит к растрескиванию защитного слоя бетона, уменьшению площади сечения арматуры. В работе предложен метод прогнозирования комплексной деградации железобетонных конструкций прибрежных сооружений с учетом различных механизмов коррозионного износа, что позволяет разработать эффективные способы повышения долговечности и ремонтопригодности конструкций, эксплуатируемых в морской среде.

Corrosion of reinforcement of marine and coastal hydrotechnical structures due to chloride aggression and carbonation of concrete leads to a sharp decrease in the safety of the structure. The reinforcement is subjected to a depassivation process as soon as the chloride content on its surface exceeds the threshold concentration, or the pH value in the protective layer of concrete decreases to the threshold value as a result of carbonation. When oxygen penetrates to the surface of the reinforcement, electrochemical reactions are realized with the formation of corrosion products. This leads to cracking the protective layer of concrete, reducing the cross-sectional area of the reinforcement. The paper proposes a method for predicting the complex degradation of reinforced concrete structures of coastal structures, taking into account various mechanisms of corrosion wear, which makes it possible to develop effective ways to increase the durability and maintainability of structures operated in the marine environment.

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The authors declare that there are no conflicts of interest present.